Did Kristen Stewart Cheat On Robert Pattinson?

Are Kristen Stewart and Robert Pattinson having serious relationship woes?

According to multiple reports, the actress allegedly cheated on her “Twilight Saga” co-star with her “Snow White and the Huntsman” director Rupert Sanders.

“Kristen is absolutely devastated,” a People source claimed. “It was a mistake and a complete lapse in judgment.”

The source claims the alleged hookup with the actress, 22, and the director, 41, took place recently.

“She wasn’t having an affair with Rupert. It was just a fleeting moment that shouldn’t have happened,” the source continued. “She never meant to hurt anyone. She’s a good person who just made a bad choice.”

Us Weekly also reported the incident, claiming there are photos of Kristen and Rupert – who is married to British Vogue model Liberty Ross, 33 – caught in a makeout session on July 17 in Los Angeles.

Rupert and Liberty have two children together and the model played Kristen’s onscreen mother in “Snow White.”

According to E!, just hours before the story broke, Liberty Tweeted, “Wow,” and then later deleted her account.

Britain’s Daily Mail also reported that Liberty reTweeted a Marilyn Monroe quote, “Sometimes good things fall apart so better things can fall together,” from the Women of History Twitter feed before she deactivated her account.

In June, Deadline.com reported that a “Snow White” sequel was in the works with Kristen and Rupert.

A rep for the director could not be reached when contacted by People and a rep for Kristen had no comment when contacted by the mag.

-- Jesse Spero

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